There will be no spares lying around according to the above schedule. Once an aircraft is delivered, albeit for some crew familiarization flights, it will go immediately into Asian services. When the 8th aircraft is delivered it may be spare.

Seeing the NRT-BKK run go to a 332 is quite a shock because a 744 has been on that run for years and loads are good. Perhaps they want to increase yield.
Well, ANA just announced an additional flight on the NRT-BKK leg, so the capacity loss can be absorbed.

When a 332 is due for periodic rest, what will replace it. A DC-10? Not sure if they will be flying to NRT after all the 332s are placed on the NRT runs. Then again, there is usually an old 742 lying around NRT.